How to Know If Someone Hacks Into Your Android Phone

1. Watch what information your new apps request. The eSecurity Planet website reports that in 2011, 28 percent of Android apps wanted your phone's GPS location and 7.5 percent accessed stored contact information. Your apps have to request permission before accessing the data, so if you can't think of a reason a new app needs the information, don't authorize your Android to share.

2. Check your bill. Some viruses, rather than stealing data, play tricks, such as directing your Android to send masses of texts to expensive premium numbers. If you notice your texting minutes and costs suddenly spike upward for no good reason, that's a warning sign you've been hacked.

3. Install protective programs to sweep your phone and detect malware. There are several free programs on the market and more on the way, though because your Android has limited storage space, using the programs may slow down your device.